Important Update News
The RRUFF Project is being updated to improve its interface and content. The beta version of the update is accessible to the public at RRUFF.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional. Existing RRUFF.info links will resolve to the new site after RRUFF.net is officially released.
We are grateful to NASA for the funding of this effort.
![]() |
![]() |
Name: Crednerite RRUFF ID: R070404 Ideal Chemistry: CuMnO2 Locality: Merehead, Mendip Hills, Somerset, England, United Kingdom Source: Michael Scott S102157 [view label] Owner: RRUFF Description: Platy iron-black striated crystals with well-defined cleavage planes Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
CHEMISTRY | ||||||
---|---|---|---|---|---|---|
|
RAMAN SPECTRUM | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
POWDER DIFFRACTION | |||||||
---|---|---|---|---|---|---|---|
RRUFF ID: | R070404.9 | ||||||
Sample Description: | Single crystal, powder profile is calculated | ||||||
Cell Refinement Output: |
a: 5.562(5)Å b: 2.882(2)Å c: 5.890(6)Å alpha: 90° beta: 104.4(1)° gamma: 90° Volume: 91.45(8)Å3 Crystal System: monoclinic |
||||||
|
|
REFERENCES for Crednerite | |
---|---|
American Mineralogist Crystal Structure Database Record: [view record] |
|
Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file] |
|
Rammelsberg C (1849) Ueber das Mangankupfererz von Friedrichsrode, Zusatz zu der vorhergehenden Abhandlung, Annalen der Physik und Chemie, 74, 559-562 [view file] |
|
Wherry E T (1924) Redefinition of species, American Mineralogist, 9, 97-98 [view file] |
|
Kondrashev I D (1959) The crystal structure and composition of crednerite, CuMnO2, Soviet Physics - Crystallography, 3, 703-706 [view file] |
|
Fleischer M (1966) New mineral names, American Mineralogist, 51, 1815-1820 [view file] |
|
Töpfer J, Trari M, Gravereau P, Chaminade J P, Doumerc J P (1995) Crystal growth and reinvestigation of the crystal structure of crednerite, CuMnO2, Zeitschrift für Kristallographie, 210, 184-187 [view file] |
|
|